[mycall]

> I've seen it take over 2GB

Probably because that RAM wasn't doing anything else. Why not use it as cache to speed things up. I'm sure it can work fine in much smaller RAM sizes.

[Dylan16807]

It's very rare that a program intelligently adjusts its cache size based on the amount of memory available.

And that doesn't explain how the "cache" is twenty times bigger than the source data.

I bet with less RAM available it would start thrashing.

[userbinator]

The fact that my machine was swapping heavily whenever I tried to switch to the Outlook tab or do anything with it says otherwise.